Vulnerability Description
The WebExtension sandbox feature in browser/components/extensions/ext-tabs.js in Mozilla Firefox before 46.0 does not properly restrict principal inheritance during chrome.tabs.create and chrome.tabs.update API calls, which allows remote attackers to conduct Universal XSS (UXSS) attacks via a crafted extension that accesses a (1) javascript: or (2) data: URL.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | <= 45.0.2 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00005.html
- http://lists.opensuse.org/opensuse-updates/2016-05/msg00038.html
- http://www.mozilla.org/security/announce/2016/mfsa2016-46.htmlVendor Advisory
- http://www.securitytracker.com/id/1035692
- http://www.ubuntu.com/usn/USN-2936-1
- http://www.ubuntu.com/usn/USN-2936-2
- http://www.ubuntu.com/usn/USN-2936-3
- https://bugzilla.mozilla.org/show_bug.cgi?id=1227462
- https://security.gentoo.org/glsa/201701-15
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00005.html
- http://lists.opensuse.org/opensuse-updates/2016-05/msg00038.html
- http://www.mozilla.org/security/announce/2016/mfsa2016-46.htmlVendor Advisory
- http://www.securitytracker.com/id/1035692
- http://www.ubuntu.com/usn/USN-2936-1
- http://www.ubuntu.com/usn/USN-2936-2
FAQ
What is CVE-2016-2817?
CVE-2016-2817 is a vulnerability with a CVSS score of 5.4 (MEDIUM). The WebExtension sandbox feature in browser/components/extensions/ext-tabs.js in Mozilla Firefox before 46.0 does not properly restrict principal inheritance during chrome.tabs.create and chrome.tabs....
How severe is CVE-2016-2817?
CVE-2016-2817 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-2817?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox.